Worms Armageddon is a 1999 turn-based strategy video game developed and published by Team17. It was originally released for the Microsoft Windows operating system, and was later ported to Nintendo 64. Worms Armageddon is the third installment in the Worms series. In the game, the player controls a team of up to eight earthworms tasked with defeating an opposing team using a wide range of weapons at their disposal. The game takes place on a destructible and customizable two-dimensional board and is characterized by cartoonish graphics and a unique brand of humour.

Worms Armageddon was originally developed as an expansion pack to Worms 2 and initially titled Wormageddon before it was released as a standalone game. Worms Armageddon was acclaimed by critics, who praised the refined gameplay and stylized graphics, and it has been featured in a number of "greatest games of all time" lists.